First, it is supported by a silly gel on the dashboard. Of course, it came off in 1 minute. I put double-sided tape and it stayed stable. Maybe it will stick to a completely smooth dashboard.
Secondly, it doesn't hold the phone tightly. (iPhone 11) I had some insecurity for a few days, but I admit that it doesn't move at all.
The only objection is its price. A reasonable price would be 10-12 euros. For 25 euros, I expected something much more qualitative. Maybe with adjustable closure, maybe it can also hold the phone horizontally, or stick more properly.
However, I don't regret buying it. I think it will last a long time (unless the sun "eats" it). I will update if there is any change.